Refer to the accompanying figure. During the development of secondary vascular tissues, which of the following
structures is replaced by periderm?
a. 1
b. 3
c. 5
d. 6
e. 7
a
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Examination of the amber nuggets on Hispaniola reveals:
A. similar ecological relationships observed on Hispaniola today. B. an abundance of mammal fossils. C. a shortage of insect fossils. D. that every one of the fossilized species are still found on Hispaniola today. E. that none of the insect fossils resemble existing species on Hispaniola today.
Where does the process of transcription initiate?
A. Promoter B. Terminator C. Regulation sequences D. Transcription factors
Research comparing chromosomal structure between the genomes of humans and other primates reveals that humans
are most closely related to ____.
a. monkeys b. orangutans c. chimpanzees d. gorillas e. lemurs
The atmosphere contains approximately ____ percent nitrogen.
A. 2 B. 10 C. 50 D. 80